Develop Bugs

[MOD] Enable 192kHz sampling rate on Lenovo Vibe K5 for audio output

Hello Everyone, today i will share my last mod to enable 192kHz on audio outputs of lenovo vibe k5 plus (Tested on A6020l36 and RR 5.8.0 + ExtremeKernel), this mod will change some values of mixer_paths_qrd_skuh file to make sound more clear and dont be loude than the lenovo's specifications for stock rom. Sample rate is the number of times of a digital signal read some point of audio wave, for example if we have a sample rate of 48kHz we can reproduce signals of 20 to 24kHz without looses, but this limits too much who wanna listen .flac files with better samplerate, the phone will reproduce without problems the sound, but we will loose some things of audio. This mod will enable 192kHz for default, removing old 48kHz samplerate.
Example of sinusoidal wave modulation:
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with more samples we can have more fidelity on audio reproduction because the processor will take more "dots" of the ported wave.
OFF: Vibe k5 l36 variant have an problem with audio (white noise) when boot device, this is a known problem, but this mod don't solve this problem, if someone have idea of what can be this problem, please say if possible, when boot white noise starts, when play any song, the white noise stops forever, return on next reboot. I already try to remove low_latency audio but stay the same.
Download link: https://www.androidfilehost.com/?w=files&flid=134017
Changelog - 06/12/16
Defining some stable values at mixer_paths
Audio_Policy may work in any rom
192kHz for all codecs, starting from 96kHz High Frequency samples

Not really. Most audio files, even the CD flac ones are mostly encoded at 44.1 kHz or 48 kHz. By setting the sound output to 192 kHz, it will upscale all music to 192 kHz, resulting in something like a pixelated zoomed image, but for audio. Best playback is obtained when the audio output sample rate matches the file sample rate.
Some files are encoded at 192 kHz, but the audiophiles who'd bother to download such files wouldn't buy this device in the first place.
On an unrelated note, the kernel you posted in another thread works with RR 5.8.0(Android 7.1) ??

kkanungo17 said:
Not really. Most audio files, even the CD flac ones are mostly encoded at 44.1 kHz or 48 kHz. By setting the sound output to 192 kHz, it will upscale all music to 192 kHz, resulting in something like a pixelated zoomed image, but for audio. Best playback is obtained when the audio output sample rate matches the file sample rate.
Some files are encoded at 192 kHz, but the audiophiles who'd bother to download such files wouldn't buy this device in the first place.
On an unrelated note, the kernel you posted in another thread works with RR 5.8.0(Android 7.1) ??
Click to expand...
Click to collapse
I have a lot of flac files encoded with 192khz, output with 44,1khz, 48khz, 96khz and 192khz makes a lot of difference in this case, also, i can listen the difference too in mp3 sounds at 320kbps, some is encoded at 96khz
And the kernel, for now, don't work in rr 5.8.0

Luiz Paulo Damaceno said:
I have a lot of flac files encoded with 192khz, output with 44,1khz, 48khz, 96khz and 192khz makes a lot of difference in this case, also, i can listen the difference too in mp3 sounds at 320kbps, some is encoded at 96khz
And the kernel, for now, don't work in rr 5.8.0
Click to expand...
Click to collapse
mp3 files don't go above 48 kHz. The 96k mp3 you have is probably a regular 48k mp3 created from a 24 bit/96k audio master

@Luiz Paulo Damaceno
that noise also came back when you shoot photo with snap camera.

My Rush discography are thanking you a lot!
Can I flash this mod on CM14.1 or just on Stock?

motafoca55 said:
My Rush discography are thanking you a lot!
Can I flash this mod on CM14.1 or just on Stock?
Click to expand...
Click to collapse
I tested in CM14.1 based roms, all works, if you can, test in MM roms or in LP roms and send-me if works or not

It seems to work on crdroid 7.1, I can now push the sound to the highest level without distortions in my cheap Sony MDR V55 headset.. will test in my car tomorrow.. In all cases, thanks !

Can I use this with any sound mod?

White noise
I have an idea how to solve the white noise problem on booting. Maybe need to play some audio such "bootaudio.ogg" while device booting? I think it solve the problem. Can you try this?

atsuand said:
I have an idea how to solve the white noise problem on booting. Maybe need to play some audio such "bootaudio.ogg" while device booting? I think it solve the problem. Can you try this?
Click to expand...
Click to collapse
Maybe playing a song just calibrate the sound drivers hardware. And I guess this problem was made by GPU or CPU electrical noise being interpreted by the sound hardware until the calibration was taken. To me looks like pretty the same with some noises produced in desktops connected to very sensible sound hardwares.
Sent from my Lenovo Vibe K5 Plus using XDA Labs

Very good
The change in quality is very perceptive. Using with Neutron MP and adjusted settings, the sound is superb!

Luiz Paulo Damaceno said:
OFF: Vibe k5 l36 variant have an problem with audio (white noise) when boot device, this is a known problem, but this mod don't solve this problem, if someone have idea of what can be this problem, please say if possible, when boot white noise starts, when play any song, the white noise stops forever, return on next reboot. I already try to remove low_latency audio but stay the same.
Click to expand...
Click to collapse
Hi man!
trying to figure out this situation, thinked a lot about what cause this behaviour, but with the limited power of my mind I come with just this and no more! Probably this is being caused by more than one frequency running through the coil of hardware sound, these frequencies produced by other hardware components makes the coil to vibrates non harmonically, and this produces that noises! hope that you understand what I am trying to say at this point! So, thinked as a possible solution put the kernel to bootup the system with a fixed combination of frequencies that non produces these non harmornic waves in the coil of the hardware sound!
sorry for my crappy english!
Edit: after boot, without playing any sound, setting max gpu clock at 100mhz reduces a lot the loudness of that noises

Mod cause Crashes on FM Radio
Making some tests, i discover what this mod crashes FM Radio when headphone is connected.
Tested on AICP ROM.

Does anyone know how to uninstall or remove this.

Pradyumna20995 said:
Does anyone know how to uninstall or remove this.
Click to expand...
Click to collapse
If you don't have one backup from before installing this so you will need to reinstall the ROM

No is necessary make clean install
Pradyumna20995 said:
Does anyone know how to uninstall or remove this.
Click to expand...
Click to collapse
Wipe Dalvik/Art Cache and Cache, reinstall ROM over existing and GApps desired.

Luiz Paulo Damaceno said:
Hello Everyone, today i will share my last mod to enable 192kHz on audio outputs of lenovo vibe k5 plus (Tested on A6020l36 and RR 5.8.0 + ExtremeKernel), this mod will change some values of mixer_paths_qrd_skuh file to make sound more clear and dont be loude than the lenovo's specifications for stock rom. Sample rate is the number of times of a digital signal read some point of audio wave, for example if we have a sample rate of 48kHz we can reproduce signals of 20 to 24kHz without looses, but this limits too much who wanna listen .flac files with better samplerate, the phone will reproduce without problems the sound, but we will loose some things of audio. This mod will enable 192kHz for default, removing old 48kHz samplerate.
Example of sinusoidal wave modulation:
with more samples we can have more fidelity on audio reproduction because the processor will take more "dots" of the ported wave.
OFF: Vibe k5 l36 variant have an problem with audio (white noise) when boot device, this is a known problem, but this mod don't solve this problem, if someone have idea of what can be this problem, please say if possible, when boot white noise starts, when play any song, the white noise stops forever, return on next reboot. I already try to remove low_latency audio but stay the same.
Download link: https://www.androidfilehost.com/?w=files&flid=134017
Changelog - 06/12/16
Defining some stable values at mixer_paths
Audio_Policy may work in any rom
192kHz for all codecs, starting from 96kHz High Frequency samples
Click to expand...
Click to collapse
Hi, most interesting mod.
I am after setting a variable sample rate mode, this is, no resampling, like PulseAudio in Linux or Windows. I have added 44100 and 48000 to all devices in audio profiles configuration, but the internal sample rate value is still 48000Khz.
I have a Xiaomi Mi 8, with dual oscillator audio chipset. When not mixing audio sources, I'd like the sample rate be adaptive. Is this possible?

OMG, this make my cheap earbuds sounds like original, i m using it with dolby atmos surrounded it's magnificent, the quality and the bass re v clear and better than ever
many thanks for making this mod!!

hey, i installed the mod on oreo aex v5.7, and every time i open any game a v loud beebing noise happens it stops when i close the game, i've reinstalled all the games, same thing , i ve tried to play games with headphone connected, the beebing sound jumped from the speakers to the headphone
playing videos and audios in any other app ,it works fine, what can i do to fix this, does wiping cache dalvik helps ? any ideas ?

[AUDIOPHILE] aptX Bluetooth - Flashable ZIP! - for Lineage based ROM's

EDIT JUNE 2018: This thread is no longer needed. If you're on the latest versions of AOSP/LOS then all you need is Magisk to install APTx and have it working.
Original thread continues below.
================================
This post will help you add aptX Bluetooth capability to your Pixel XL.
NOTE: This mod is only for ROM's using the Qualcomm Bluetooth stack, such as 14.1+ Cyanogen/Lineage OS.
Does not work in ROM's using the AOSP Bluetooth stack, such as Stock Pixel, Dirty Unicorns/Pure Nexus.
Apt-X and Apt-X HD are officially supported in Lineage OS based ROM's
https://www.xda-developers.com/late...port-for-aptx-and-aptxhd-caf-rebase-and-more/
For the moment, this thread only deals with non-HD aptX.
aptX HD is still rarely supported by headphones & other devices.
I'll research and add appropriate files for HD soon.
-------------------------------
-------------------------------
KNOWN COMPATIBLE ROMs:
CRDroid
Hexa-Project
Lineage OS
OctOS
Resurrection Remix
Tesla
Tipsy
-------------------------------
-------------------------------
DIRECTIONS TO INSTALL MOD:
Just go to this post and flash the zip in TWRP.
Please make sure to give @Namelesswonder many thanks for creating the zip for us!!!
https://forum.xda-developers.com/showpost.php?p=72267710&postcount=104
-------------------------------
-------------------------------
VERIFY MOD IS WORKING
To verify the mod is working, you should only need your ears and a HIGH QUALITY audio file.
Otherwise, you can use search your logcat for the string "aptx" to verify it's being enabled.
Such as in the output you see below.
Code:
01-14 18:57:40.539 1457 1625 I bt_btif_media: btif_a2dp_encoder_init Selected Codec [b]aptX[/b]
01-14 18:57:40.646 1457 4089 W bt_osi_thread: run_thread: thread id 4089, thread name [b]aptx[/b]_media_worke started
-------------------------------
-------------------------------
Have you heard of aptX Bluetooth?
It lets your Bluetooth connection deliver cleaner, fuller sounding audio to aptX supported devices (headphones, car stereo, etc).
Your Pandora may not sound any better, but your FLAC and other high end MP3 type files should sound cleaner, slightly more sparkly highs and better defined lows.
Think of it as the difference between listening to FM radio vs. a CD.
While it's not that drastic a difference, a capable ear should be able to enjoy what aptX delivers.
Same goes for HD voice calls if you have access to that. There may be more clarity noticed on these types of calls when using an aptX supported audio chain.
The aptX mod should not interfere with Viper or any other Android audio mod.
It's simply a codec, such as A2DP using SBC. But instead of SBC, you'll be using aptX.
Please give a big thanks to @dh.harald for coming up with this particular solution.
https://forum.xda-developers.com/oneplus-3/themes/mod-aptx-codec-t3521228
Here is my original aptX thread from 2013 containing dated discussions leading to our current status.
https://forum.xda-developers.com/showthread.php?t=2531440
Bluetooth® is limited by a maximum available bandwidth so it’s not always suitable for delivering high quality audio
Click to expand...
Click to collapse
Qualcomm aptX audio enables CD-like quality wireless audio because it solves the problem of sending the full music bandwidth over Bluetooth
Click to expand...
Click to collapse
Compression ratio: 4:1
Audio Format: 16-bit, 44.1kHz (CD-Quality)
Data Rates: 352kbps
Frequency Response: 10Hz to 22kHz
Algorithmic Delay: <1.89ms @ Fs 48KHz
Dynamic Range: 16-bit: >92dB
THD+N: -68.8dB
Click to expand...
Click to collapse
What are head-fi members views on apt-x lossless codec (over bluetooth)?
How good is bluetooth audio at its best?
-------------------------------
-------------------------------

Will this work with pure nexus ROM?

kirschdog1 said:
Will this work with pure nexus ROM?
Click to expand...
Click to collapse
Unlikely. I think they use AOSP Bluetooth stack.
You can try though, it won't break anything to put the files in the same location.
But I'm fairly sure it'll be a waste of time.
Someone with a Nexus 6 said it didn't work on their pure nexus ROM.

CZ Eddie said:
Unlikely. I think they use AOSP Bluetooth stack.
You can try though, it won't break anything to put the files in the same location.
But I'm fairly sure it'll be a waste of time.
Someone with a Nexus 6 said it didn't work on their pure nexus ROM.
Click to expand...
Click to collapse
I have it in my stock ROM, rooted with a custom kernel. I haven't tested it out yet. But I feel like these files do what I usually do manually in system/etc/a2dp_audio_policy_configuration.xml set the values to "96000,192000" and Bluetooth dramatically increases in depth and clarity almost the same as setting your computer audio to 24bit 192000 it's just a driver. I don't know why Google doesn't make this code part of Android it really makes a difference!
It should look like this:
<?xml version="1.0" encoding="UTF-8"?>
<!-- A2dp Audio HAL Audio Policy Configuration file -->
<module name="a2dp" halVersion="2.0">
<mixPorts>
<mixPort name="a2dp output" role="source">
<profile name="" format="AUDIO_FORMAT_PCM_16_BIT"
samplingRates="96000,192000"
channelMasks="AUDIO_CHANNEL_OUT_STEREO"/>
</mixPort>
<mixPort name="a2dp input" role="sink">
<profile name="" format="AUDIO_FORMAT_PCM_16_BIT"
samplingRates="96000,192000"
channelMasks="AUDIO_CHANNEL_IN_MONO,AUDIO_CHANNEL_IN_STEREO"/>
</mixPort>
</mixPorts>
<devicePorts>
<devicePort tagName="BT A2DP Out" type="AUDIO_DEVICE_OUT_BLUETOOTH_A2DP" role="sink">
<profile name="" format="AUDIO_FORMAT_PCM_16_BIT"
samplingRates="96000,192000"
channelMasks="AUDIO_CHANNEL_OUT_STEREO"/>
</devicePort>
<devicePort tagName="BT A2DP Headphones" type="AUDIO_DEVICE_OUT_BLUETOOTH_A2DP_HEADPHONES" role="sink">
<profile name="" format="AUDIO_FORMAT_PCM_16_BIT"
samplingRates="96000,192000"
channelMasks="AUDIO_CHANNEL_OUT_STEREO"/>
</devicePort>
<devicePort tagName="BT A2DP Speaker" type="AUDIO_DEVICE_OUT_BLUETOOTH_A2DP_SPEAKER" role="sink">
<profile name="" format="AUDIO_FORMAT_PCM_16_BIT"
samplingRates="96000,192000"
channelMasks="AUDIO_CHANNEL_OUT_STEREO"/>
</devicePort>
<devicePort tagName="BT A2DP In" type="AUDIO_DEVICE_IN_BLUETOOTH_A2DP" role="source">
<profile name="" format="AUDIO_FORMAT_PCM_16_BIT"
samplingRates="96000,192000"
channelMasks="AUDIO_CHANNEL_IN_MONO,AUDIO_CHANNEL_IN_STEREO"/>
</devicePort>
</devicePorts>
<routes>
<route type="mix" sink="BT A2DP Out"
sources="a2dp output"/>
<route type="mix" sink="BT A2DP Headphones"
sources="a2dp output"/>
<route type="mix" sink="BT A2DP Speaker"
sources="a2dp output"/>
<route type="mix" sink="a2dp input"
sources="BT A2DP In"/>
</routes>
</module>

Will this work on stock n rooted?

moosc said:
Will this work on stock n rooted?
Click to expand...
Click to collapse
My mod or the mod above?
My mod will work with stock rooted, and a custom kernel. Use ES file explorer and a text editor to modify th .XML file and restart. You will notice the difference with good audio. Also WETA audio adds a significant audio gain with the addition of Sony and HTC audio libraries. You don't have to use Dolby Atmos or viper4android that ar included to get these gains. I'm one for not to processed audio viper tends to make the sound signature sound to digital but some of its settings are good for certain situations. That's the link for the WETA mod.
https://www.androidfilehost.com/?fid=745425885120694195

I'm pretty sure I tried aptX mod on stock and it didn't work. You're welcome to try though, it won't break anything.
Sachi, you might want to make a separate thread for your mod and leave it out of this thread.
aptX will increase bandwidth but I'm sure your mod has its merits too.

I did this mod on my Pixel xl rooted with elementalx kernel 1.03 and stock ROM. Worked fine but for some reason when ever the phone went to sleep it would not wake back up.

drzprettyboy30 said:
I did this mod on my Pixel xl rooted with elementalx kernel 1.03 and stock ROM. Worked fine but for some reason when ever the phone went to sleep it would not wake back up.
Click to expand...
Click to collapse
I cannot think of a single reason why that would happen.
I'll try to duplicate this afternoon.

Thanks bro I really loved this mod! Makes my BT headphones Sound so crispy. I know it's the mod causing it because after reverting back it stopped dong it, but will keep testing. Oh I forgot to mention I do have viper audio mod and the dolby Atmos on my Pixel XL. Could that be that issue?

drzprettyboy30 said:
Thanks bro I really loved this mod! Makes my BT headphones Sound so crispy. I know it's the mod causing it because after reverting back it stopped dong it, but will keep testing. Oh I forgot to mention I do have viper audio mod and the dolby Atmos on my Pixel XL. Could that be that issue?
Click to expand...
Click to collapse
I flashed back to stock "V" 7.1.1 image which is the latest.
Then rooted with SuperSU 2.79 SR2.
Then installed ElementalX 1.03.
Then installed the .so aptX files and connected to my aptX headphones.
I am only connecting via A2DP, as expected. aptX does not engage/work at all.
I did verify this via my headphones blue LED which flashes a certain times to indicate A2DP vs. aptX as well as reviewed my catlog which did not indicate aptX was in use.
I also verified no issues with phone going into or waking up from deep sleep.

CZ Eddie said:
I flashed back to stock "V" 7.1.1 image which is the latest.
Then rooted with SuperSU 2.79 SR2.
Then installed ElementalX 1.03.
Then installed the .so aptX files and connected to my aptX headphones.
I am only connecting via A2DP, as expected. aptX does not engage/work at all.
I did verify this via my headphones blue LED which flashes a certain times to indicate A2DP vs. aptX as well as reviewed my catlog which did not indicate aptX was in use.
I also verified no issues with phone going into or waking up from deep sleep.
Click to expand...
Click to collapse
So.. You're saying this mod doesn't work? I'm starting to get impatient with ARISE and this seemed like a great, easy alternative to tide me over.

Alcolawl said:
So.. You're saying this mod doesn't work? I'm starting to get impatient with ARISE and this seemed like a great, easy alternative to tide me over.
Click to expand...
Click to collapse
This mod is for Roms that use the Qualcomm BT stack which stock uses AOSP stack. So no this will not work on stock ROM
Sent from my Pixel XL using Tapatalk

Alcolawl said:
So.. You're saying this mod doesn't work? I'm starting to get impatient with ARISE and this seemed like a great, easy alternative to tide me over.
Click to expand...
Click to collapse
It doesn't work on stock or other ROM's with AOSP bluetooth stack.
It DOES work on ROM's with Qualcomm Bluetooth stack, though so far there is only one to test & verify this with.
Here is Lineage OS ROM and it works on this ROM:
https://forum.xda-developers.com/pixel-xl/help/try-lineage-xl-t3537898

Wouldn't it be possible to simply "copy"/port the Qualcomm BT Stack onto regular AOSP roms? I'm talking replace the libs and confs type of deal...

bmg1001 said:
Wouldn't it be possible to simply "copy"/port the Qualcomm BT Stack onto regular AOSP roms? I'm talking replace the libs and confs type of deal...
Click to expand...
Click to collapse
That would be nice.
Click the link in my signature to monitor the [mostly non-existent] development towards this goal.
Btw, there is a new LineageOS based ROM in the dev forum.
This aptX mod should work on it too.
The ROM is still in Alpha testing though.
https://forum.xda-developers.com/pixel-xl/development/rom-hexa-project-t3544204

CZ Eddie said:
That would be nice.
Click the link in my signature to monitor the [mostly non-existent] development towards this goal.
Btw, there is a new LineageOS based ROM in the dev forum.
This aptX mod should work on it too.
The ROM is still in Alpha testing though.
https://forum.xda-developers.com/pixel-xl/development/rom-hexa-project-t3544204
Click to expand...
Click to collapse
Running it right now and it's pretty nice. Few little nitpicks here and there but amazing for an Alpha.
Sent from my Pixel XL using XDA Labs

Is this apt-x or the new apt-x HD?

scoobydu said:
Is this apt-x or the new apt-x HD?
Click to expand...
Click to collapse
aptX.
I think one of the LG devices has the new HD but it doesn't work on our device.

Does Qualcomm's BT seem more stable or better than stock Android?
Sent from my Pixel XL using Tapatalk

Does Lenovo P2 supports HQ sound over bluetooth?

Hey,
I'm currently looking for a smartphone with long battery life and support of HQ sound (LDAC preferred).
I found some ROMs with Android 8.0 and I heard that this version of OS supports LDAC. Does it mean that when I install one of these ROMs, I will be able to use LDAC?

Koprzywa said:
Hey,
I'm currently looking for a smartphone with long battery life and support of HQ sound (LDAC preferred).
I found some ROMs with Android 8.0 and I heard that this version of OS supports LDAC. Does it mean that when I install one of these ROMs, I will be able to use LDAC?
Click to expand...
Click to collapse
LDAC is included in AOSP since Oreo so you should be able to use it on every 8+ ROM until someone will remove it from his ROM. It is visible in my codec selection menu on LOS15.1 but I can't test it for you since I'm not in possession of any wireless headphones. I believe that you should look for information and how it works on other phones threads too, not only here. There is possibility that Lineage doesn't support this codec itself since stock haven't supported it but I'm not sure about that since LDAC is part of AOSP unlike AptX for example where your phone needs to be certified to allow developers to include this codec in official builds.
Basically you can add any existing bluetooth audio codec to your phone's ROM. There's not any hardware requirements besides bluetooth so I believe that you should be able to use it.

APTX codec support

Could any user of this phone tell me if it supports the Aptx codec, and if yes, which versions? Standard, HD, adaptive, LL? I know that Note 7 Pro did because of its Snapdragon processor, but I have no idea if Helio supports it, and various sites list it as supported or not.
cya
Raziel-chan

Razzeh said:
Could any user of this phone tell me if it supports the Aptx codec, and if yes, which versions? Standard, HD, adaptive, LL? I know that Note 7 Pro did because of its Snapdragon processor, but I have no idea if Helio supports it, and various sites list it as supported or not.
cya
Raziel-chan
Click to expand...
Click to collapse
It seems that currently RN8Pro doesn't support AptX codec.
When I pair AptX bluetooth headphones with logcat I see the following lines:
10-12 04:07:07.362 11107 11155 E a2dp_vendor_aptx_encoder: A2DP_VendorLoadEncoderAptx: cannot open aptX encoder library libaptX_encoder.so: dlopen failed: library "libaptX_encoder.so" not found
10-12 04:07:07.362 11107 11155 E a2dp_vendor_aptx: init: cannot load the encoder
10-12 04:07:07.365 11107 11155 E a2dp_vendor_aptx_hd_encoder: A2DP_VendorLoadEncoderAptxHd: cannot open aptX-HD encoder library libaptXHD_encoder.so: dlopen failed: library "libaptXHD_encoder.so" not found
10-12 04:07:07.365 11107 11155 E a2dp_vendor_aptx_hd: init: cannot load the encoder
I think it's possible to add AptX support applying special patch by TWRP or rooting and copying missing libraries to system/vendor/lib
I hope we will get AptX support in future MIUI releases...

Google_Android said:
It seems that currently RN8Pro doesn't support AptX codec.
When I pair AptX bluetooth headphones with logcat I see the following lines:
10-12 04:07:07.362 11107 11155 E a2dp_vendor_aptx_encoder: A2DP_VendorLoadEncoderAptx: cannot open aptX encoder library libaptX_encoder.so: dlopen failed: library "libaptX_encoder.so" not found
10-12 04:07:07.362 11107 11155 E a2dp_vendor_aptx: init: cannot load the encoder
10-12 04:07:07.365 11107 11155 E a2dp_vendor_aptx_hd_encoder: A2DP_VendorLoadEncoderAptxHd: cannot open aptX-HD encoder library libaptXHD_encoder.so: dlopen failed: library "libaptXHD_encoder.so" not found
10-12 04:07:07.365 11107 11155 E a2dp_vendor_aptx_hd: init: cannot load the encoder
I think it's possible to add AptX support applying special patch by TWRP or rooting and copying missing libraries to system/vendor/lib
I hope we will get AptX support in future MIUI releases...
Click to expand...
Click to collapse
Thanks.
You did the test with aptx enabled in developer options, right?
Cya
Raziel-chan

Razzeh said:
You did the test with aptx enabled in developer options, right?
Click to expand...
Click to collapse
Of course, yes.

Google_Android said:
It seems that currently RN8Pro doesn't support AptX codec.
When I pair AptX bluetooth headphones with logcat I see the following lines:
10-12 04:07:07.362 11107 11155 E a2dp_vendor_aptx_encoder: A2DP_VendorLoadEncoderAptx: cannot open aptX encoder library libaptX_encoder.so: dlopen failed: library "libaptX_encoder.so" not found
10-12 04:07:07.362 11107 11155 E a2dp_vendor_aptx: init: cannot load the encoder
10-12 04:07:07.365 11107 11155 E a2dp_vendor_aptx_hd_encoder: A2DP_VendorLoadEncoderAptxHd: cannot open aptX-HD encoder library libaptXHD_encoder.so: dlopen failed: library "libaptXHD_encoder.so" not found
10-12 04:07:07.365 11107 11155 E a2dp_vendor_aptx_hd: init: cannot load the encoder
I think it's possible to add AptX support applying special patch by TWRP or rooting and copying missing libraries to system/vendor/lib
I hope we will get AptX support in future MIUI releases...
Click to expand...
Click to collapse
Google_Android said:
Of course, yes.
Click to expand...
Click to collapse
Thanks.
That's a pity, the phone seemed like the perfect choice until now. And note 7 Pro isn't available in my country.
Cya
Raziel-chan

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https://www.xda-developers.com/xiaomi-redmi-note-8-pro-first-impressions/
Here they say that it actually has the aptx and the LDAC aswell. So how it is possible not to have it included in the soft?\
edit:
it seems that really it doesn't have the aptx libs. What is going on?

Czarny * said:
https://www.xda-developers.com/xiaomi-redmi-note-8-pro-first-impressions/
Here they say that it actually has the aptx and the LDAC aswell. So how it is possible not to have it included in the soft?\
edit:
it seems that really it doesn't have the aptx libs. What is going on?
Click to expand...
Click to collapse
That's what confused me, many sites report it as supporting aptx.
Cya
Raziel-chan

I am really annoyed right now because I have 2 pairs of headphones and the bluetooth speakers with aptX and they are connecting to the phone by SBC. The quality of audio is terrible. I was sure that it has the aptx. Can someone confirm it too?
edit:
aptX is the qualcomm technology, mediatek doesn't support it.

There's a Magisk module for enabling aptx, probably should work

Is there any way to activate aptX? I used a magisk module a while ago with my Note 5, but this had a Snapdragon SOC, not a Mediatek. This is really anoying, nearly all reviews show aptx as supported, but there is nothing in the specs on the Xiaomi web page.
Edit: at least LDAC is working

In fact, on my RN8T, when I go to bluetooth codecs on developer options, it shows there "Qualcomm Aptx", "Qualcomm Aptx HD", etc... But when I try to select, it always sticks on "Use the system selection (pre-defined)", and I can't change. So I think the phone as Aptx Codec, I don't know is how to able it.

tico_ocit said:
In fact, on my RN8T, when I go to bluetooth codecs on developer options, it shows there "Qualcomm Aptx", "Qualcomm Aptx HD", etc... But when I try to select, it always sticks on "Use the system selection (pre-defined)", and I can't change. So I think the phone as Aptx Codec, I don't know is how to able it.
Click to expand...
Click to collapse
Yes, I'm replying my post.
I tested, and when I connected a bluetooth headphones with Aptx Audio, for the case Sennheiser 4.50BT NC, the connection made was an Aptx connection. When the connection is made, appears on the bluetooth settings the sign "Aptx".
So, there is no need of a library. You only need a Bluetooth Headphone that actually has Aptx Audio, or Aptx HD.
Also beware, that, for low latency, it's a specific Aptx, Aptx Low Latency. Aptx Audio, only affects the quality of the audio.
Hope I could help.

tico_ocit said:
Yes, I'm replying my post.
I tested, and when I connected a bluetooth headphones with Aptx Audio, for the case Sennheiser 4.50BT NC, the connection made was an Aptx connection. When the connection is made, appears on the bluetooth settings the sign "Aptx".
So, there is no need of a library. You only need a Bluetooth Headphone that actually has Aptx Audio, or Aptx HD.
Also beware, that, for low latency, it's a specific Aptx, Aptx Low Latency. Aptx Audio, only affects the quality of the audio.
Hope I could help.
Click to expand...
Click to collapse
When I connect my headset I get SBC. I don't even know what it is, but I get it doesn't support Aptx.

polfrank said:
When I connect my headset I get SBC. I don't even know what it is, but I get it doesn't support Aptx.
Click to expand...
Click to collapse
On developer options - Bluetooth Audio Codecs, what options do you have?
From my perspective, the headset doesn't support Aptx Codec. What phone do you have?

tico_ocit said:
On developer options - Bluetooth Audio Codecs, what options do you have?
From my perspective, the headset doesn't support Aptx Codec. What phone do you have?
Click to expand...
Click to collapse
This is while the headset is connected. It is a Chinese device with the xiaomi.eu rom.

I have 2 aptx headphones and one aptxhd, they all only connect as sbc

Same here. All headsets that showed aptx on my Note 7 are now only showing SBC. I've not heard of any positiv results for aptx support and Note 8 PRO.

roox911 said:
I have 2 aptx headphones and one aptxhd, they all only connect as sbc
Click to expand...
Click to collapse
I've tried on a Senneheiser 4.50BT NC, and I can confirm that it connected with aptx audio. So, what I suggest is to go to a store and try it, with one that you really have sure that has aptx audio, because I've heard that a lot of headphones sold on some online shops on the spects have "aptx", but that is not true. So go to a store and try it. Another thing, my phone is a Xiaomi Redmi Note 8T, with MIUI 10.

tico_ocit said:
I've tried on a Senneheiser 4.50BT NC, and I can confirm that it connected with aptx audio. So, what I suggest is to go to a store and try it, with one that you really have sure that has aptx audio, because I've heard that a lot of headphones sold on some online shops on the spects have "aptx", but that is not true. So go to a store and try it. Another thing, my phone is a Xiaomi Redmi Note 8T, with MIUI 10.
Click to expand...
Click to collapse
Yes, but there might be some differences between 8T and 8 pro. This thing about fake Aptx headsets may be true though.

polfrank said:
Yes, but there might be some differences between 8T and 8 pro. This thing about fake Aptx headsets may be true though.
Click to expand...
Click to collapse
I'm aware that this is a RN8 Pro topic, and the processor is a mediatek. From what I read, the RN8 Pro includes Aptx.
I answered this topic, first of all, because I was having the same problem on a RN8T, which could be an important input for solving this problem, and then when I realized that there wasn't any problem, I think I should share it, because maybe if on developer - Bluetooth codec options appears the aptxs options then it must have the codec available when connecting to a Bluetooth headphones that has supports Aptx.

Question Poco F3 / LDAC

Hi everyone,
Does the POCO F3 have the LDAC codec support for Hi-Res áudio?
Thanks

asademosca said:
Hi everyone,
Does the POCO F3 have the LDAC codec support for Hi-Res áudio?
Thanks
Click to expand...
Click to collapse
I'm curious did you make an xda account just to start a thread to ask a question? I've noticed everyday now that about 20 people a day start new threads and I wondered why. Xda was developed for people who are into development and want to flash Roms and root their phones.
To answer your question it should you need to turn on developer options and search for Bluetooth codecs. I don't have my Poco f3 yet I just ordered it today otherwise I would tell you how to turn on developer options but it's usually go into settings find your build number and tap on it 7 times and it'll say turned on developer options. I believe the poco f3 is in settings find your MIUI version number and tap it 7 times and then find additional settings and you'll see developer options now. Look for the Bluetooth codecs but here's the bad news. You can only use them on headphones that support the ldac codec the system will over ride your settings and use the headphones settings. Good luck

@Techguy777, you are right! I was so frustrated not finding solutions that I had to be one more these irritanting guys that make a XDA account just to place a thread. I understand you and I'am honestly sorry! Please, accept my apologies
I'am in developer mode since the first day I have this monster phone. Yeah, it's a beast!
In developer mode, the LDAC codec among others is there but It doesn't mean that poco f3 can use it. Sometimes we found in developer mode options or settings that are not usable because they are not still finished and need a final touch in a future firmware upgrade. The POCO F3 has support for AptX HD codec (see specs) but it isn't avaible today. We will have it in a future flash.
My earphones are the Anker Soundcore Liberty 3 Pro, and they have LDAC Hi-Res codec. All I need now, is a music provider (like Tidal) with hi-res audio streaming service and if the POCO F3 has really the LDAC codec support..... BOOOOOM!!!
Finally, I found elsewhere, LDAC codec is present in any phone that support Android 8 or later. Don't now if is true but I place my bet
Thank you for your king size support

Hi, according to my experience of using Sony WH-1000XM3, Redmi K40 supports LDAC, which should be the same model as POCO F3, but I didn't have a chance to try if it support Hi-Re audio. Hope my experience will be helpful to you.

asademosca said:
The POCO F3 has support for AptX HD codec (see specs) but it isn't avaible today. We will have it in a future flash.
Click to expand...
Click to collapse
What? Poco F3 have support for aptx-hd and also for ldac... If you have a Earphones that support these codecs you can use It and all working fine!

Angyone1 said:
What? Poco F3 have support for aptx-hd and also for ldac... If you have a Earphones that support these codecs you can use It and all working fine!
Click to expand...
Click to collapse
Are u sure about LDAC codec?

asademosca said:
Are u sure about LDAC codec?
Click to expand...
Click to collapse
Yes of course... Read the message of chuanjun_
If you have a decent pair of earphones Sony that support ldac..

LDAC works perfectly fine both on Arrow os and worked as well before I switched on miui.

asademosca said:
Hi everyone,
Does the POCO F3 have the LDAC codec support for Hi-Res áudio?
Thanks
Click to expand...
Click to collapse
Yes... I activate LDAC, I just bought sony Wf1000xm4 earbuds and i figured it out, It take me hours, Hehe! But it is still ldac, i try to off Bluetooth and on, paired, unpaired and its is still Ldac...

asademosca said:
@Techguy777, you are right! I was so frustrated not finding solutions that I had to be one more these irritanting guys that make a XDA account just to place a thread. I understand you and I'am honestly sorry! Please, accept my apologies
I'am in developer mode since the first day I have this monster phone. Yeah, it's a beast!
In developer mode, the LDAC codec among others is there but It doesn't mean that poco f3 can use it. Sometimes we found in developer mode options or settings that are not usable because they are not still finished and need a final touch in a future firmware upgrade. The POCO F3 has support for AptX HD codec (see specs) but it isn't avaible today. We will have it in a future flash.
My earphones are the Anker Soundcore Liberty 3 Pro, and they have LDAC Hi-Res codec. All I need now, is a music provider (like Tidal) with hi-res audio streaming service and if the POCO F3 has really the LDAC codec support..... BOOOOOM!!!
Finally, I found elsewhere, LDAC codec is present in any phone that support Android 8 or later. Don't now if is true but I place my bet
Thank you for your king size support
Click to expand...
Click to collapse
i activate my ldac in Sony xm4 earbuds, took me hours, Hehe! I just actiavte
asademosca said:
Hi everyone,
Does the POCO F3 have the LDAC codec support for Hi-Res áudio?
Thanks
Click to expand...
Click to collapse
Yes

asademosca said:
@Techguy777, you are right! I was so frustrated not finding solutions that I had to be one more these irritanting guys that make a XDA account just to place a thread. I understand you and I'am honestly sorry! Please, accept my apologies
I'am in developer mode since the first day I have this monster phone. Yeah, it's a beast!
In developer mode, the LDAC codec among others is there but It doesn't mean that poco f3 can use it. Sometimes we found in developer mode options or settings that are not usable because they are not still finished and need a final touch in a future firmware upgrade. The POCO F3 has support for AptX HD codec (see specs) but it isn't avaible today. We will have it in a future flash.
My earphones are the Anker Soundcore Liberty 3 Pro, and they have LDAC Hi-Res codec. All I need now, is a music provider (like Tidal) with hi-res audio streaming service and if the POCO F3 has really the LDAC codec support..... BOOOOOM!!!
Finally, I found elsewhere, LDAC codec is present in any phone that support Android 8 or later. Don't now if is true but I place my bet
Thank you for your king size support
Click to expand...
Click to collapse
I just bought xm4 earbuds, took me hours to activate ldac, But now i am using ldac.

..

IDGAF2K21 said:
I just bought xm4 earbuds, took me hours to activate ldac, But now i am using ldac.
Click to expand...
Click to collapse
Sorry to butt in so late but, the Poco F3 does not officially support LDAC. If you force it on via developer options or, in the Android Bluetooth settings, it will only use "Best Effect" LDAC at 360 kbps, which apparently has less clarity than SBC. If you try to set it to "Optimised for Audio Quality" in Developer Options, it just reverts straight back. I ran Bluetooth diagnostic software on my phone and, LDAC was not listed as a selectable codec.

Polarized77 said:
Sorry to butt in so late but, the Poco F3 does not officially support LDAC. If you force it on via developer options or, in the Android Bluetooth settings, it will only use "Best Effect" LDAC at 360 kbps, which apparently has less clarity than SBC. If you try to set it to "Optimised for Audio Quality" in Developer Options, it just reverts straight back. I ran Bluetooth diagnostic software on my phone and, LDAC was not listed as a selectable codec.
Click to expand...
Click to collapse
I'd never touched developer options
I'd never touched developer options
before, but LDAC work perfectly with my Soundcore Life Q35 and if I choose "Optimised for Audio Quality" stays on Audio Quality. I use Apple Music lossless audio.

Mikael1013 said:
View attachment 5477285
I'd never touched developer optionsView attachment 5477287 I'd never touched developer options
before, but LDAC work perfectly with my Soundcore Life Q35 and if I choose "Optimised for Audio Quality" stays on Audio Quality. I use Apple Music lossless audio.
Click to expand...
Click to collapse
An off-topic question, how do you get the battery icon colored? I also have the POCO F3.

VectorGames05 said:
An off-topic question, how do you get the battery icon colored? I also have the POCO F3.
Click to expand...
Click to collapse
Theme: flower finch

I think I found a way for Android with the Sony XM4, I am not completely sure because I did not have an app to measure the bitrate but there is some clues that shows it works. I use the french app so the name of parameters could be bad translated.
1. You need to download the Sony Music Center App (it is an app different from Sony Headphones Connect).
2. Connect your headphones to your phone with bluetooth.
3. Go to the Sony Music Center App. You will see your heaphone in the list of connected device.
4. Click on the three dots in the upper right corner and click on Parameters.
5. Click on bluetooth parameters and click playback quality
6. Choose priority to quality
You can check that the maximum bitrate is set by default by looking at the developper menu in android parameters. If you look at it the LDAC codec automaticaly toggle to 990kbps.
I advice you to restart your phone after that.
However, you need to reopen music center to reactivate 990kbps mode everytime you reconnect your headphone.

Hey folks, what do I need to do to enable ldac for my Poco F3 with Sony headphones?

Use Sony's app

How to activate LDAC on a POKO F3 phone, Sony WH-H900N on ear 2 headphones. Via Music Center error in the screenshot, Music Center also cannot activate, if you select LDAC, then the settings are reset.